Multi-layer co-extrusion production technology for bidirectional tensile polyethylene antibacterial anti-fogging film

Abstract

The invention discloses a multi-layer co-extrusion production technology for a bidirectional tensile polyethylene antibacterial anti-fogging film, and belongs to the field of films. According to the multi-layer co-extrusion production technology for the bidirectional tensile polyethylene antibacterial anti-fogging film, high production speed and high yield can be achieved, meanwhile, the film produced by the technology has the anti-fogging performance and the high mechanical and optical performance. In the production process, homogenizing diaphragm balls can be distributed at the inner walls of closer die heads in an attached mode and moved downwards, a homogenizing distributor is heated while the balls pass through the homogenizing distributor, and therefore an interlayer can be formed between an inner extrusion material and an outer extrusion material, and a transparent static electricity eliminating layer is formed between an outer surface layer and a secondary surface layer of theformed film. On one hand, static electricity of the finished film can be effectively eliminated so that use can be convenient. On the other hand, the connecting strength between the outer surface layer and the secondary surface layer can be effectively improved through the transparent static electricity eliminating layer, the mechanical property can be remarkably improved, and meanwhile the optical performance of the film can be effectively improved.

Description

technical field [0001] The invention relates to the field of films, and more specifically relates to a multi-layer co-extrusion production process of biaxially stretched polyethylene antibacterial and antifog films. Background technique [0002] PE film, that is, polyethylene film, refers to a film produced from PE film. PE film has moisture resistance and low moisture permeability. Polyethylene film (PE) can produce products with different properties such as low-density, medium-density, high-density polyethylene and cross-linked polyethylene according to different manufacturing methods and control methods. [0003] Polyethylene is a non-toxic, odorless white powder or granule, milky white in appearance, waxy in hand, and low in water absorption, less than 0.01%. Polyethylene film is transparent and decreases with increasing crystallinity. Polyethylene film has low water permeability but high air permeability, so it is not suitable for fresh-keeping packaging but suitable...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, when a small width production line is used to produce biaxially oriented polyethylene film, the output of the extruder is low, the extrusion output is about 1 ton / hour, the speed of the production line is low, the speed is lower than 150 meters / hour, and only 10 tons can be produced per day Left and right, that is, the overall production efficiency is low, and the stability during production is poor, there are many film breaks during production, and the vertical and horizontal stretch ratio is small, the optical and mechanical properties of the product are poor, and there is no biaxially oriented polyethylene anti-fog in the prior art Membrane Technology

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